JPS5541474A - Thin type spectacle lens - Google Patents

Thin type spectacle lens

Info

Publication number
JPS5541474A
JPS5541474A JP11559878A JP11559878A JPS5541474A JP S5541474 A JPS5541474 A JP S5541474A JP 11559878 A JP11559878 A JP 11559878A JP 11559878 A JP11559878 A JP 11559878A JP S5541474 A JPS5541474 A JP S5541474A
Authority
JP
Japan
Prior art keywords
lens
spectacle lens
boundary
seen
whirl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11559878A
Other languages
Japanese (ja)
Inventor
Masaru Egawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP11559878A priority Critical patent/JPS5541474A/en
Publication of JPS5541474A publication Critical patent/JPS5541474A/en
Pending legal-status Critical Current

Links

Landscapes

  • Eyeglasses (AREA)

Abstract

PURPOSE: To eliminate whirl, boundary, etc. from the spectacle lens as seen from the front side, by grinding off the optically unnecessary part in the specified range in the outer circumferential part of the spectacle lens in a specified shape.
CONSTITUTION: The optically unnecessary part 4 of a lens is ground off for the entire circumference within 5mm from the outer circumference of the back side of the lens to be shaped into a form having fitting and protruding part to join with the frame. As a result, the brim thickness of the minor lens is reduced. At the same time, the boundary between the spherical part and aspherical part of the outer circumference of the back side of the lens is eliminated, and the spectacle lens is free from whirl, boundary, etc. when seen from the front side. Thus, spectacles excelling in aesthetic effect may be obtained without narrowing the visual field.
COPYRIGHT: (C)1980,JPO&Japio
JP11559878A 1978-09-19 1978-09-19 Thin type spectacle lens Pending JPS5541474A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11559878A JPS5541474A (en) 1978-09-19 1978-09-19 Thin type spectacle lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11559878A JPS5541474A (en) 1978-09-19 1978-09-19 Thin type spectacle lens

Publications (1)

Publication Number Publication Date
JPS5541474A true JPS5541474A (en) 1980-03-24

Family

ID=14666576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11559878A Pending JPS5541474A (en) 1978-09-19 1978-09-19 Thin type spectacle lens

Country Status (1)

Country Link
JP (1) JPS5541474A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144322U (en) * 1982-03-20 1983-09-29 三喜眼鏡光器株式会社 glasses lenses
JPS6060724U (en) * 1983-09-30 1985-04-27 中尾　勝光 near vision glasses lenses
US4630906A (en) * 1982-05-14 1986-12-23 Carl-Zeiss-Stiftung Blank for eyeglass lenses having ellipse-like edge curves and means and method for selecting
GB2612390A (en) * 2021-07-09 2023-05-03 Webb Anthony Invisible edge lens

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144322U (en) * 1982-03-20 1983-09-29 三喜眼鏡光器株式会社 glasses lenses
US4630906A (en) * 1982-05-14 1986-12-23 Carl-Zeiss-Stiftung Blank for eyeglass lenses having ellipse-like edge curves and means and method for selecting
JPS6060724U (en) * 1983-09-30 1985-04-27 中尾　勝光 near vision glasses lenses
JPH0128490Y2 (en) * 1983-09-30 1989-08-30
GB2612390A (en) * 2021-07-09 2023-05-03 Webb Anthony Invisible edge lens
GB2612390B (en) * 2021-07-09 2024-01-17 Webb Anthony Invisible edge lens

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